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Not necessarily. Sti's will generally show about 40 more horse with a downpipe and a tune because of the bigger intercooler.

Unfortunately, that isn't true. While it does provide superior cooling and prevention of heatsoak, if they have the same mods, the STi doesn't always make more power. Here's an example of the exact opposite actually:

It doesn't mention what gas is used, but the WRX dyno took place in August and the STi was in December so it certainly wasn't a humidity issue.

I live like right next to surgeline in tigard oregon. ..... just saving up, then thinking about going and seeing those guys

Talk to Tim, great guy, will not steer you wrong or push product you do not or don't need, bets tuner in the business.

Quote:

Originally Posted by Fotown

So you are saying that the STI has a drive-train loss of around 80+hp? or almost a 3rd.

60-70, yes.

Quote:

Originally Posted by 13_DGM_Hatch

Not necessarily. Sti's will generally show about 40 more horse with a downpipe and a tune because of the bigger intercooler.

Nope, they read the same, the engines/timics are the same untill you push the stock WRX timic above 19-20psi, then the aluminum flanges start to bend out against the plastic end tanks and they can pop, the STI does have this problem.

The real advantages in the STI are all non engine related, DCCD, Brembos, 6mt, 114mm wheel bearings, stiffer suspension, the 2009-2010 make the same power with the same mods though, about 300 at the crank just like the STI and from there it is essentially the same engine. From 2011 on they seemed to have dialed out the stock tune to give the STI more of an advantage, but that is just tune.

Essentially the same thing, if I remember correctly, the early 09 cars had weaker pistons, I assume that's what you're talking about? I've got a 2010 WRX hatch as well. My motor is out right now, likely busted ringlands. That's the main problem with any turbo Subaru, especially when you start pushing the power like I am.

Essentially the same thing, if I remember correctly, the early 09 cars had weaker pistons, I assume that's what you're talking about? I've got a 2010 WRX hatch as well. My motor is out right now, likely busted ringlands. That's the main problem with any turbo Subaru, especially when you start pushing the power like I am.

Essentially the same thing, if I remember correctly, the early 09 cars had weaker pistons, I assume that's what you're talking about? I've got a 2010 WRX hatch as well. My motor is out right now, likely busted ringlands. That's the main problem with any turbo Subaru, especially when you start pushing the power like I am.

Keep the stock turbo, get a GOOD tune that's not pushing the limits, and stay on top of your service. Buying things like exhaust and intake are not going to hurt reliability if their tuned for and maintained correctly. When you go to adding a larger turbo, that to me is when a lot more stress is added due to the (usually) large jump in power

Keep the stock turbo, get a GOOD tune that's not pushing the limits, and stay on top of your service. Buying things like exhaust and intake are not going to hurt reliability if their tuned for and maintained correctly. When you go to adding a larger turbo, that to me is when a lot more stress is added due to the (usually) large jump in power

I'm making 360 whp on my vf52 09 wrx. I have E85 and basic bolt ons. As far as reliability I haven't had any problems, knock on wood, but every car is different. There is no telling when a certain amount of power is too much for something to handle.

It is a known fact that early 09 s had a habit of spinning rod bearings..... ive got 48000 on the odo.... most experiences ive heard of happens well before 50k... i suppose not all tho... thus the bumper to bumper warranty.